Home / 428,610.18-642,784.01-296,340.42

Finding the Fourth Proportional to 428,610.18, 642,784.01 and 296,340.42

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Solution

The fourth proportional to 428,610.18, 642,784.01 and 296,340.42 is: 444,419.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,610.18 : 642,784.01 = 296,340.42 : x
  2. Step 2: Convert to fraction form
    428,610.18/642,784.01 = 296,340.42/x
  3. Step 3: Cross multiply
    428,610.18x = 642,784.01 × 296,340.42
  4. Step 4: Simplify right side
    428,610.18x = 190,482,884,421.42
  5. Step 5: Solve for x
    x = 190,482,884,421.42/428,610.18
  6. Step 6: Final answer
    x = 444,419.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.